W. Pickett

activity

20002008

most citedAvoiding the polarization catastrophe in LaAlO3 overlayers on SrTiO3(001) through a polar distortion

319 citations · 2k across the 28 of their papers we have counts for

collaborators

Showing cond-mat.str-elShow all

9 papers · 1 filter

cond-mat.str-el2008★ 81 cited

Magnetism from $2 p$ States in Alkaline Earth Monoxides: Trends with Varying N Impurity Concentration

V. Pardo, W. E. Pickett

$2 p$ -based magnetic moments and magnetic coupling are studied with density functional based methods for substitutional N in the alkaline earth monoxide series MgO, CaO, SrO, BaO. T…

cond-mat.str-el2007★ 10 cited

Chemical Differences between K and Na in Alkali Cobaltates

K. -W. Lee, W. E. Pickett

K $_{x}$ CoO $_{2}$ shares many similarities with Na $_{x}$ CoO $_{2}$ , as well as some important differences (no hydration-induced superconductivity has been reported). At $T_{c 2}$ =20 K, K$_{0.…

cond-mat.str-el2007★ 3 cited

Static versus dynamic fluctuations in the one-dimensional extended Hubbard model

H. A. Craig, C. N. Varney, W. E. Pickett +1

The extended Hubbard Hamiltonian is a widely accepted model for uncovering the effects of strong correlations on the phase diagram of low-dimensional systems, and a variety of theo…

cond-mat.str-el2005★ 4 cited

Disproportionation and Critical Interaction Strength in Na $_{x}$ CoO $_{2}$ : Concentration Dependence

K. -W. Lee, W. E. Pickett

We present results of studies of charge disproportionation (CD) and spin differentiation in Na $_{x}$ CoO $_{2}$ using the correlated band theory approach (local-density approximation+Hub…

cond-mat.str-el2005★ 20 cited

Na $_{x}$ CoO $_{2}$ in the x -> 0 Regime: Coupling of Structure and Correlation effects

K. -W. Lee, W. E. Pickett

The study of the strength of correlations in Na $_{x}$ CoO $_{2}$ is extended to the x=0 end of the phase diagram where Mott insulating behavior has been widely anticipated. Inclusion of…

cond-mat.str-el2004★ 51 cited

Disproportionation Transition at Critical Interaction Strength: Na $_{1/2}$ CoO $_{2}$

K. -W. Lee, J. Kunes, P. Novak +1

Charge disproportionation (CD) and spin differentiation in Na $_{1/2}$ CoO $_{2}$ are studied using the correlated band theory approach. The simultaneous CD and gap opening seen previou…

Magnetism from 2p States in Alkaline Earth Monoxides: Trends with Varying N Impurity Concentration

Chemical Differences between K and Na in Alkali Cobaltates

Static versus dynamic fluctuations in the one-dimensional extended Hubbard model

Disproportionation and Critical Interaction Strength in Nax​CoO2​: Concentration Dependence

Nax​CoO2​ in the x -> 0 Regime: Coupling of Structure and Correlation effects

Disproportionation Transition at Critical Interaction Strength: Na1/2​CoO2​

Magnetism from $2 p$ States in Alkaline Earth Monoxides: Trends with Varying N Impurity Concentration

Disproportionation and Critical Interaction Strength in Na $_{x}$ CoO $_{2}$ : Concentration Dependence

Na $_{x}$ CoO $_{2}$ in the x -> 0 Regime: Coupling of Structure and Correlation effects

Disproportionation Transition at Critical Interaction Strength: Na $_{1/2}$ CoO $_{2}$